Hole options

I'd like to add a thread callout for a Helicoil tapped hole. For anyone thats used them you know they are different than a standard tap. I thought I could add a sub type in the threaded hole selection, but the excel file limits oyu to only the 1,2, or 3 option for thread types. How can we add a 4th type to this? After a bit of googleing it appears SW has a "STI" thread option. (STI = screw thread insert) Can we get one?

I also thought maybe I could just copy the 1/2-13 (size I'm using) size and adjust the drill size, add a STI suffix to the name and use that, but when you go to use it there's an error stating there's two duplicate sizes.

So is work around to make my nominal hole size larger, say .5001, and go from there?

Re: Hole options

I was able to add the STI version to the standard "ANSI inch" but changed the nominal to .5001 to fix what I thought was this error, but it still pops up. I copied the excel sheet to a "Craigs ansi inch" it does the same.

What exactly is the "thread family identifier"? and what diameters ar duplicates? the tinted row is my STI tap.

Re: Hole options

After a few excel copies and copying the 1/2-13 row I was able to make it work..I'm a little stumped of why I got that error and what it means exactly the first time I tried to create the new thread. (which led to this post)The highlighted row in the above pic was simply a copy and insert and I got that error?I tried again to the existing excel file and no issues.The tap drill size was changed originally as well.